253006139 has 4 divisors (see below), whose sum is σ = 253770840. Its totient is φ = 252241440.

The previous prime is 253006133. The next prime is 253006163. The reversal of 253006139 is 931600352.

253006139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253006139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253006133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381854 + ... + 382515.

It is an arithmetic number, because the mean of its divisors is an integer number (63442710).

Almost surely, 2^253006139 is an apocalyptic number.

253006139 is a deficient number, since it is larger than the sum of its proper divisors (764701).

253006139 is an equidigital number, since it uses as much as digits as its factorization.

253006139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764700.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 253006139 is about 15906.1666972278. The cubic root of 253006139 is about 632.4754698939.

The spelling of 253006139 in words is "two hundred fifty-three million, six thousand, one hundred thirty-nine".